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. 2020 Sep 29;15:7155–7171. doi: 10.2147/IJN.S238399

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© 2020 Yang et al.

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Macroscopic observation (MO) and histological evaluation of repaired tissue at 2 and 4 weeks after surgery. Gross appearance of the repaired tendon defects in the four groups (A1–A4, B1–B4). Hematoxylin & eosin (HE) staining (A5–A12, B5–B12) and Masson staining (A13–A20, B13–B20) of repaired tissue. The yellow rectangle indicates the area shown in the below images at higher magnification. Scale bars: 100 µm in (A5–A20, B5–B20).